SPRING - MOTOR BRUSH (Komatsu KO4974168)

A worn motor brush spring can cause intermittent electrical contact and eventual motor failure. This aftermarket replacement part references Komatsu as the OE maker and cross-references part number KO4974168. The spring applies consistent pressure to the motor brush, maintaining contact with the commutator. If the spring loses tension, the brush may bounce or fail to seat, leading to arcing and reduced motor performance. In a typical usage context, a failed spring results in a non-starting or sluggish motor. The item ships at approximately 0.02 pounds. Verify the serial number or application, then call (562) 693-7748.

Part number variants: KO4974168, ko4974168